Police and Dunkin’ Brands are offering a $2,500 reward for help in the capture and conviction of a man suspected in armed robberies at Dunkin’ Donuts restaurants in Canton and 10 other area towns this summer.

Canton Police Chief Kenneth Berkowitz said Friday that the same man appears to have held up all 11 sites, most recently in Raynham.

Berkowitz said the suspect robbed the Canton Dunkin’ Donuts at 600 Neponset St. at 8:15 p.m. on June 30 and just before 8:30 p.m. on July 24.

The other robberies were in Norwood, Walpole, Westwood, Plainville, Norton, North Attleboro, Easton, Newton and West Roxbury.

Berkowitz said the suspect filmed in a Dunkin’ Donuts security video is a white or Hispanic male wearing a hooded sweatshirt and black mask and carrying a black handgun.

Anyone with information on any of the holdups is urged to contact the Canton police Bureau of Criminal Investigations at 781-828-1214, ext. 300 or 303. Information may also be left on the police department's online tip form.